Long-term underground work in iron ore mines may lead to pneumoconiosis, but it is not a certainty. Pneumoconiosis is a diffuse pulmonary fibrosis disease, mainly caused by long-term inhalation of mineral dust, is an occupational disease, long-term iron ore mine underground work is often due to long-term inhalation of disease-causing dust, in the lungs to produce extensive fibrosis, thus causing pneumoconiosis. However, there is only a relatively high probability of getting pneumoconiosis, and it is not a certainty that you will get pneumoconiosis. Pneumoconiosis is a chronic disease with mild symptoms in the early stages. As the disease gradually worsens, symptoms such as coughing up phlegm, coughing, chest pain, dyspnea, etc., and then hemoptysis and pneumothorax will occur. Long-term iron ore mine underground workers should go to the hospital for regular checkups and take good protection on a daily basis. Once pneumoconiosis is detected, it is necessary to leave the working environment as soon as possible and receive timely treatment.